@mixin initial {
    margin: 0;
    padding: 0;
    border:none
}

*,
*::before,
*::after {
    @include initial;
    box-sizing: border-box;
}

html {
    font-size: 62.5%; 
    line-height: 1.5;
}

body {
  /* 设置字体 */
    font-family: 宋体;     
    line-height: 1.6; 
    /* 设置默认行高 */
    @include initial;
}

ul,
ol {
    list-style: none; /* 去除默认的列表符号 */
    @include initial;
}

a {
    text-decoration: none; /* 去除链接的下划线 */
}

table {
    border-collapse: collapse; /* 去除表格的空隙 */
}
